Nanostructures in Hydrogen Peroxide Sensing

TRUJILLO, RICARDO M.; BARRAZA, DANIELA E.; ZAMORA, MARTIN M.; CATTANI-SCHOLZ, ANNA; MADRID, ROSSANA E.

SENSORS

MOLECULAR DIVERSITY PRESERVATION INTERNATIONAL-MDPI

Lugar: Basel; Año: 2021

1424-8220

In recent years, several devices have been developed for the direct measurement ofhydrogen peroxide (H2O2), a key compound in biological processes and an important chemicalreagent in industrial applications. Classical enzymatic biosensors for H2O2 have been recentlyoutclassed by electrochemical sensors that take advantage of material properties in the nano range.Electrodes with metal nanoparticles (NPs) such as Pt, Au, Pd and Ag have been widely used, often incombination with organic and inorganic molecules to improve the sensing capabilities. In this review,we present an overview of nanomaterials, molecules, polymers, and transduction methods used inthe optimization of electrochemical sensors for H2O2 sensing. The different devices are compared onthe basis of the sensitivity values, the limit of detection (LOD) and the linear range of applicationreported in the literature. The review aims to provide an overview of the advantages associated withdifferent nanostructures to assess which one best suits a target application.